/Engine/Source/Developer/CollectionManager/Public/ICollectionManager.h
Called to notify the collections that a redirector has been deleted and that they should ensure their on-disk representation is re-saved with the fixed up in-memory version
true if all of the collections that were referencing this redirector could be re-saved, false otherwise
bool HandleRedirectorDeleted ( const [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) & ObjectPath )